SANTA CLARA -- First-round pick Eric Reid filled the need for a safety, and now the 49ers merely have 11 picks remaining to fortify a roster for their NFC-title defense.

Does general manager Trent Baalke know how he'll use the second pick in Friday's second round (34th overall)?

"Absolutely we know," Baalke said Monday night. "But that doesn't mean that something can't happen over the night and you wake up tomorrow and the phone rings and somebody has a deal that you can't refuse and you trade back.

"Otherwise, we are prepared to make the pick."

The 49ers own three picks in Friday's action: Nos. 34, 61 (second round) and 93 (third round). They dealt their other third-round pick to the Dallas Cowboys to move up 13 spots to select Reid.

The 49ers may be interested in Stanford tight end Zach Ertz as the NFL Draft continues Friday. (Jim Gensheimer/Staff)
(Jim Gensheimer)

With only 32 players off the board, myriad possibilities remain for the 49ers, and here are 12 worth considering:

Stanford tight end Zach Ertz: If Jim Harbaugh was so proud to draft a recruit-who-got-away in Reid, imagine what it would be like for the coach to actually draft a player he coached at Stanford for the first time.

Alabama defensive tackle Jesse Williams: After taking only two SEC players in the past three drafts, could the 49ers make it two in a row?

Boise State cornerback Jamar Taylor: His 4.33 speed in the 40-yard dash could make him the next cornerback off the board, after four were selected Thursday night.

Florida State defensive lineman Tank Carradine: Last season's ACL tear dropped him out of the first round, but he showed burst at a recent workout. He could join a handful of other 49ers still recovering from ACL tears (Kyle Williams, Mario Manningham, Darius Fleming).

Cal wide receiver Keenan Allen: A knee injury and off-field concerns may have dropped his stock out of the first round, but his speed and style have drawn comparisons to Anquan Boldin, whom he could team with on the 49ers.

Tennessee wide receiver Justin Hunter: Inexperience (17 starts) and durability concerns (2011 ACL tear) kept him on the board while three other receivers got drafted in the first round, including teammate Cordarrelle Patterson.